Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "imageitem.h"
++
++ //! [0]
++ ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent)
++ : QGraphicsPixmapItem(pixmap, parent)
++ {
++ recordId = id;
++ setAcceptHoverEvents(true);
++
++ timeLine.setDuration(150);
++ timeLine.setFrameRange(0, 150);
++
++ connect(&timeLine, &QTimeLine::frameChanged, this, &ImageItem::setFrame);
++ connect(&timeLine, &QTimeLine::finished, this, &ImageItem::updateItemPosition);
++
++ adjust();
++ }
++ //! [0]
++
++ //! [1]
++ void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/)
++ {
++ timeLine.setDirection(QTimeLine::Forward);
++
++ if (z != 1.0) {
++ z = 1.0;
++ updateItemPosition();
++ }
++
++ if (timeLine.state() == QTimeLine::NotRunning)
++ timeLine.start();
++ }
++ //! [1]
++
++ //! [2]
++ void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/)
++ {
++ timeLine.setDirection(QTimeLine::Backward);
++ if (z != 0.0)
++ z = 0.0;
++
++ if (timeLine.state() == QTimeLine::NotRunning)
++ timeLine.start();
++ }
++ //! [2]
++
++ //! [3]
++ void ImageItem::setFrame(int frame)
++ {
++ adjust();
++ QPointF center = boundingRect().center();
++
++ setTransform(QTransform::fromTranslate(center.x(), center.y()), true);
++ setTransform(QTransform::fromScale(1 + frame / 300.0, 1 + frame / 300.0), true);
++ setTransform(QTransform::fromTranslate(-center.x(), -center.y()), true);
++ }
++ //! [3]
++
++ //! [4]
++ void ImageItem::adjust()
++ {
++ setTransform(QTransform::fromScale(120.0 / boundingRect().width(),
++ 120.0 / boundingRect().height()));
++ }
++ //! [4]
++
++ //! [5]
++ int ImageItem::id() const
++ {
++ return recordId;
++ }
++ //! [5]
++
++ //! [6]
++ void ImageItem::updateItemPosition()
++ {
++ setZValue(z);
++ }
++ //! [6]
++
++